Double two-cycle engine.



No` 369,508. PATENTED 061229, Q?"a W. I MORE-0W. DOUBLE TWO CYCLE ENGN.

APFLIOATION FILED 51:12.13, 1903.

UNITED STATES PATENT OFI-Ien DOUBLE TWO-CYCLE ENGINE.

Speci'licaton of Letters Patent.

Patented Oct. 29, 1907.

Application ne@ March 13.1906. sei-n1 No. 305.790.

" To all whom 'it muy concern:

, -Be it known that 1 WILLIAM L, Moneow, a citizen of theUnited States, residing at Stockton, in the county 0f San Joaquin and State of California, have invented certain new and useful Improvements in Double Two- Cycle Engines; and I do declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and the charactersof reference marked'thereon, which form a part of this speciiiy cation.

My invention relates to improvements in gas engines,

`and particularly tothe cylinders thereof, and my object is vto produce a double two cycle engine of this class of improved construction and inc fased utility and cfliciency.

This object I accomplish by a cylinder having a solid divisionwall dividing said cylinder into two distinct chambers provided with an open port mechanism, all as will appear by a perusal of the following specification ard the claims appended thereto.

In the drawings similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of my improved engine. Fig. 2 is a-longitudinal section of the said engine. Fig. 3 is a vertical section of portions.

The improved device comprises two cylinders 1 and 1 arranged in longitudinal alinement with their inner ends spaced apart and connected to a central dividing member, the-latter formed in two parts 4 and 4, these parts being detachably united by bolts 19, and the outer members 4 and 4a being provided with half bearings 2o and 20* in their adjacentfaces to receive a shaft 21, the .latter having cranks 22, 23, at the ends exteriorly of Vthe members 4 and 4% vided with the .usual 'water jacket spaces denoted at 7, and the members 4 and-1 are likewise provided with .interior -hollow 'spaces through which water is adapted to be passed to prevent the heating of the parts. The outer ends of'the cylinders 1, 1, are provided with heads 2 and 3. Operating in the cylinder l is a piston 8 having a rod 9 extending through the head 2, and the cylinder 1, is provided with a piston 1Q having a rod 1l, Vextending through the head 3.

129ml 12l are cross rods connected to the rods 9 and 11' respectively and working in suitable guides, .and 13 and 13n are driving rods connecting the said rods l12 and 12 to the crank shaft 21 upon which are the fly wheels i4, the shaft being journaled through the central divim'niportion 4.

l5 are mixers connected to the chambers 5`and v6 by means of suitable intake check valves. 16 are circulating feed ports located in the sides of the chambers 5 and 6 and adapted to conduct the charge from the rear to the front of the pistons when the same The cylinders 1 and 1a are proare in their backward position, as will be hereafter shown.

17 are exhaust ports located in the sides of and leading from the ,chambers 5 and 6, said ports being-disposed a trifle nearer the partition wall 4 than are the inner ends of the ports 16.

1S are the usual jump spark igniter extending into the chambers 5 and 6 near the partition wall 4.

In using the machine the checkvalves in the device l5 are so regulated t1 at the suction caused by the movement of the pistons in one direction will draw into the chambers 5 and 6 an amount of the mixture equal to the charges bof the cylinders. Then at the return movement of the pistons the exhaust'ports open an instant before the inner ends oi the circulating feed ports 16 are uncovered thus allowing the exhaust to occur before the new charge enters the chamber. When the pistons are at the end of their movement in one direction the feed port 16 opens from the rear to the front of the piston, as shown in the drawing, and the compression caused by the return movement of the pistons causes a charge to pass into the front of the piston, and the movement oi the pistons compresses this charge near the wall 4 and the spark ignited explodes said charge and drives the piston in the opposite direction the pistons thus working alternately. Water running through the jacket 7` keeps the cylinders cool.

I have now described the present and preferred ernbodiment of my invention and shown that I have produced an engine which strikes from the center, and has continuous compression and alternative en "-losion and xhaust. Because of the contin nous compression as set forth above, when the spark igniter is switched off the engine comes to a stop always on half compression in the front and rear of -each piston, said compression being composed of the explosive mixture as described, whereby the engine can be started instantly when the spark igniter is switched on again without the necessity of 'cranking Having thus described my invention I claim.

1. In u gas engine, two cylinders disposed in longitudinal nlinement and provided with closure heads at the outer ends, a dividing member between the cylinders and formed in two `parts having half bearings in their adjacent faces, means for connecting said two-'part dividing member' between said cylinders, a shaft journaled in said bearings und with cranks at the outer` ends, pistons operating respectively in said cylinders, piston rodsconnectcd to said pistons and extending through the closure heads oi' the cylinders, cross heads connectedto the free ends of said piston rods, and coupling rodsbetween said cross headsand cranks.

2. in a gas engine, two cylinders disposed in longitudins1 aiinement and with closure heads at their outer ends, a divi-ding member disposed between said cylinders and provided with a transverse shaft hearing, means for coupling snid connecting member'to said cylinders, pistons operating in said cylinders, piston rods connected to saidpisltons-and extending through said closure heads, cross heads connected to said pistons, connecting rods between siiid cross hends and cranks, spnrk igniters nsocinted with Suid cviinders near `said dividing,r member, mixer devices associiii'ed with szid cylinders near said closure heads, :ind exhaust ports in smid cylinders.

1n zi gais engine. twq cylinders disposed in longitudinal alineinent :1nd provided with heads at the outer ends, :l dividing member between the Cylinders :ind connected to their :idjncent ends :ind provided with a transverse shaft' bearing, a shaft member mounted [orrotntion in said beern ing :1nd with cranks at the ends, pistons Working; respectively in said Cylinders, piston rods connected to said pisA tons and extending through said ciosure needs', cross heads :it the free ends of snidpiston rods, connecting rods between said cross heads and cranks, circulating feed ports igniters associated with said cylinders nem' said dividing member, mixer devices nssocinted with said cylinders nem' said closure heads.

In testimony whereo I aix my signature in presence of two witnesses.

WILLILI L. MORROW.

Witnesses I'nncr S. WEBSTER, JOSHUA B. WEBSTER. 

